Respiration

When you breathe, your lungs take in ___ and remove ___. 

• air/oxygen
• oxygen/carbon dioxide 
• carbon dioxide/waste 
• waste/air 

Where in the body does respiration take place? Select the best answer.

• The lungs

• The muscles

• All cells

• The blood

The ___________ is the dome shaped muscle below the lungs

• diaphragm

• rib

• alveoli

• trachea

________ is the tube that connects the larynx to the lungs.

• alveoli

• larynx

• pharynx

• trachea

smaller branches in lungs

• pharynx

• epiglottis

• bronchioles

• alveoli

2 tubes entering the lungs

• pharynx

• larynx

• bronchus

• bronchioles

nose and mouth

• Openings where air enters and exits the body

• The gas that enters the blood through the lungs and travels to the heart to be pumped by the arteries to all body cells.

• Tiny air sacs found found at the end of the bronchioles, where gas exchange occurs between the lungs and the bloodstream.

• Breathing air out of the lungs

Alveoli

• Tiny air sacs found at the end of the bronchioles, where gas exchange occurs between the lungs and the bloodstream.

• The passageway from the trachea to the lungs.

• A tube made up of rings of cartilage that air passes through after it leaves the pharynx (throat).

• Openings where air enters and exits the body

respiratory system

• The organ that covers the vocal chords.

• The main organs of the respiratory system, used to take in oxygen and breathe out carbon dioxide.

• A system of organs that we use to inhale oxygen and exhale carbon dioxide.

• To inhale oxygen and exhale carbon dioxide

mucus

• The gas that enters the blood through the lungs and travels to the heart to be pumped by the arteries to all body cells.

• A thick, slippery substance that moistens and traps particles from the air

• The passageway from the trachea to the lungs.

• To inhale oxygen and exhale carbon dioxide